$3\mathrm{.}41$ The pumping system shown in Fig. $3\mathrm{.}54$ must have a pressure of $5$ pei in the discharge: line when cavitation is incipient at the pump inlet. Calculate the length of pipe from the reservoir to the pump for this operating condition if the lass it this pipe can be exprased as $(\frac{V_1^2}{2}q)(0\mathrm{.}03\frac{L}{D}).$ What horsepower is being supplied to the fluid by the pump?$\text{'}$ What pereent of this power is being thexl to overcome losises? The harometer reads $30-$in$.$ Hy$.$

Figure $3\mathrm{.}54$ Problem $3\mathrm{.}41.$